US8723323B2 - Method for fabricating solder columns for a column grid array package - Google Patents
Method for fabricating solder columns for a column grid array package Download PDFInfo
- Publication number
- US8723323B2 US8723323B2 US13/547,518 US201213547518A US8723323B2 US 8723323 B2 US8723323 B2 US 8723323B2 US 201213547518 A US201213547518 A US 201213547518A US 8723323 B2 US8723323 B2 US 8723323B2
- Authority
- US
- United States
- Prior art keywords
- solder columns
- package
- tab
- substrate
- electronic devices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000679 solder Inorganic materials 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title abstract description 7
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims description 38
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000001351 cycling effect Effects 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/4867—Applying pastes or inks, e.g. screen printing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/58—Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
- H01L23/64—Impedance arrangements
- H01L23/642—Capacitive arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0016—Brazing of electronic components
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/4853—Connection or disconnection of other leads to or from a metallisation, e.g. pins, wires, bumps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49811—Additional leads joined to the metallisation on the insulating substrate, e.g. pins, bumps, wires, flat leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the present invention relates to an integrated circuit device packages in general, and in particular to a method for fabricating solder columns for a column grid array package.
- An integrated circuit (IC) device package may have an IC chip bonded to one side of a substrate and an array of metal connectors extending from the opposite side of the substrate.
- Two well-known IC device packages are ball grid array (BGA) packages and column grid array (CGA) packages.
- BGA packages utilize an array of solder balls as metal connectors, and are typically employed by relatively low-performance chip applications.
- CGA packages utilize an array of solder columns as metal connectors.
- the solder columns of CGA packages have less tin content than the solder balls in BGA packages, which provide a more compliant and flexible pin connection points that can withstand large temperature or mechanical fluctuations.
- CGA packages are typically employed by relatively high-performance chip applications.
- the present disclosure provides an improved method for fabricating solder columns for CGA packages.
- a column grid array package in accordance with a preferred embodiment of the present invention, includes a substrate, an integrated circuit located on a first side of the substrate, and a set of solder columns located on a second side of the substrate.
- the column grid array package also includes multiple two-tab electronic devices located on the second side of the substrate. The heights of the two-tab electronic devices are substantially identical to the heights of the solder columns.
- FIG. 1 is a diagram showing a bottom view of a column grid array package, in accordance with a preferred embodiment of the present invention
- FIG. 2 is a diagram of a side view of the column grid array package from FIG. 1 , in accordance with a preferred embodiment of the present invention
- FIG. 3 is a diagram of a side view of the column grid array package from FIG. 1 , in accordance with an alternative embodiment of the present invention.
- FIG. 4 is a high-level flow diagram of a method for fabricating solder columns for column grid array packages.
- capacitors For a noise suppression standpoint, it is beneficial to place a large number of capacitors as close as possible to various integrated circuit (IC) devices located on a printed circuit board (PCB).
- the capacitors help minimizing electrical noise from the IC devices as well as noise in power supplies and ground planes.
- the capacitors also prevent rail collapses or voltage drops across an IC device's power supply that would cause the IC device to malfunction.
- capacitors can be placed inside the IC device package and/or on a PCB on which the IC device package is placed.
- these capacitors may take up a large amount of space within the IC device package and/or the PCB on which the IC device package is placed. While some of the capacitors can be placed directly across a power supply to an IC device and the ground return, such connections may introduce a significant amount of connection inductance between the power supply and the capacitors. The large amount of connection inductance can drastically reduce the effectiveness of the capacitors when the operating speeds of the IC device exceed 500 MHz.
- a set of capacitors can be placed directly in parallel or in-line with solder columns of a column grid array (CGA) package.
- CGA column grid array
- a CGA package 100 includes an array of solder columns 120 arranged on one side of a substrate 101 .
- An IC chip (not shown) can be bonded to the opposite side of substrate 101 .
- Electrical connections to the IC chip can be formed through substrate 101 to various contact pads (not shown) on the opposite side of substrate 101 , and solder columns 120 can be attached to the contact pads.
- Substrate 101 can be made of, for example, ceramic or silicon.
- CGA package 100 also includes several capacitors 150 located on the same side of solder columns 120 . Basically, capacitors 150 have occupied the locations that would have been occupied by solder columns 120 on substrate 101 .
- CGA package 100 includes an IC chip 110 located on the top side of substrate 101 , and multiple solder columns 120 located on the bottom side of substrate 101 .
- solder columns 120 Preferably made of solder, solder columns 120 vary from 0.050 inch to 0.100 inch in height. The height provides compliancy that allow solder columns 120 to flex during thermal expansion rather than fracture as ball grid array solder balls will do when exposed to continuous temperature cycling.
- CGA package 100 includes capacitors 150 on the bottom side of substrate 101 .
- capacitors 150 are two-tab cylindrical capacitors that match the height of solder columns 120 .
- capacitors 150 should be able to flex during thermal expansion when exposed to continuous temperature cycling.
- capacitors 150 should preferably be located towards the center of CGA package 100 (instead of located around the parameter as shown in FIG. 2 ).
- two-tab cylindrical capacitors are utilized in FIG. 2 , it is understood by those skilled in the art that other shapes of two-tab capacitors are also applicable for the present invention. While the preferred geometry of the two-tab capacitors is cylindrical having a circular cross-section, other geometries, such as a rectangular block having a rectangular (or square) cross-section, are also acceptable.
- the height of solder columns 120 can be reduced or lengthened to match the height of the standard two-tab capacitors.
- a reduced-height solder column can be joined to an end of a standard two-tab capacitor to provide height matching.
- CGA package 100 includes an IC chip 110 located on the top side of substrate 101 , and multiple solder columns 120 located on the bottom side of substrate 101 .
- Solder columns 120 vary from 0.050 inch to 0.100 inch in height.
- CGA package 100 includes capacitors 151 on the bottom side of substrate 101 .
- Each of capacitors 151 is connected to a reduced-height solder column 160 that is also connected to the bottom side of substrate 101 .
- capacitors 151 are two-tab cylindrical capacitors. Although two-tab cylindrical capacitors are utilized in FIG. 3 , it is understood by those skilled in the art that other shapes of two-tab capacitors are also applicable for the present invention.
- FIG. 4 there is illustrated a method for fabricating solder columns for CGA packages, in accordance with a preferred embodiment of the present invention.
- two-tab capacitors are loaded using a first loading template having holes large enough to fit the two-tab capacitors, as shown in block 401 .
- Solder paste is then applied to the top surface of the two-tab capacitors, as depicted in block 402 .
- the solder columns are loaded, as shown in block 403 .
- Solder is reflowed, as depicted in block 404 .
- Solder paste is then applied to the top surface of the solder columns, as shown in block 405 .
- a substrate or an interposer is loaded on top the two-tab capacitors and solder columns, as depicted in block 406 . Finally, the solder is reflowed to join the substrate to the two-tab capacitors and the solder columns to complete the assembly, as shown in block 407 .
- the present invention provides an improved method for fabricating solder columns of a CGA package.
- CGA packages of the present invention have high packaging density with minimal inductance.
- two-tab capacitors are utilized to illustrate the present invention, it is understand that by those skilled in the art that the present invention is also applicable for any two-tab electronic device.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
Abstract
Description
Claims (16)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/547,518 US8723323B2 (en) | 2012-07-12 | 2012-07-12 | Method for fabricating solder columns for a column grid array package |
US14/224,402 US20140206153A1 (en) | 2012-07-12 | 2014-03-25 | Method for fabricating solder columns for a column grid array package |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/547,518 US8723323B2 (en) | 2012-07-12 | 2012-07-12 | Method for fabricating solder columns for a column grid array package |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/224,402 Division US20140206153A1 (en) | 2012-07-12 | 2014-03-25 | Method for fabricating solder columns for a column grid array package |
Publications (2)
Publication Number | Publication Date |
---|---|
US20140015098A1 US20140015098A1 (en) | 2014-01-16 |
US8723323B2 true US8723323B2 (en) | 2014-05-13 |
Family
ID=49913286
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/547,518 Active US8723323B2 (en) | 2012-07-12 | 2012-07-12 | Method for fabricating solder columns for a column grid array package |
US14/224,402 Abandoned US20140206153A1 (en) | 2012-07-12 | 2014-03-25 | Method for fabricating solder columns for a column grid array package |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/224,402 Abandoned US20140206153A1 (en) | 2012-07-12 | 2014-03-25 | Method for fabricating solder columns for a column grid array package |
Country Status (1)
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US (2) | US8723323B2 (en) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3898541A (en) * | 1973-12-17 | 1975-08-05 | Vitramon Inc | Capacitors and method of adjustment |
US4734818A (en) * | 1985-01-22 | 1988-03-29 | Rogers Corporation | Decoupling capacitor for surface mounted leadless chip carriers, surface mounted leaded chip carriers and Pin Grid Array packages |
US5132806A (en) * | 1989-06-19 | 1992-07-21 | Hitachi, Ltd. | Semiconductor integrated circuit device |
US5404265A (en) * | 1992-08-28 | 1995-04-04 | Fujitsu Limited | Interconnect capacitors |
US6145735A (en) * | 1998-09-10 | 2000-11-14 | Lockheed Martin Corporation | Thin film solder paste deposition method and tools |
US6320249B1 (en) * | 1999-11-30 | 2001-11-20 | Glotech, Inc. | Multiple line grids incorporating therein circuit elements |
US20020179573A1 (en) * | 2001-06-01 | 2002-12-05 | Gianchandani Yogesh B. | Micro-electro-discharge machining method and apparatus |
US6917113B2 (en) * | 2003-04-24 | 2005-07-12 | International Business Machines Corporatiion | Lead-free alloys for column/ball grid arrays, organic interposers and passive component assembly |
US20070034989A1 (en) * | 2004-07-15 | 2007-02-15 | Fujitsu Limited | Capacitive element, method of manufacture of the same, and semiconductor device |
US7348661B2 (en) * | 2004-09-24 | 2008-03-25 | Intel Corporation | Array capacitor apparatuses to filter input/output signal |
US7553696B2 (en) * | 2006-08-29 | 2009-06-30 | International Business Machines Corporation | Method for implementing component placement suspended within grid array packages for enhanced electrical performance |
US7944028B2 (en) * | 2002-02-11 | 2011-05-17 | Don Saunders | TFCC (TM) and SWCC (TM) thermal flex contact carriers |
US8395902B2 (en) * | 2008-05-21 | 2013-03-12 | International Business Machines Corporation | Modular chip stack and packaging technology with voltage segmentation, regulation, integrated decoupling capacitance and cooling structure and process |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200414858A (en) * | 2003-01-15 | 2004-08-01 | Senju Metal Industry Co | Apparatus and method for aligning and attaching solder columns to a substrate |
-
2012
- 2012-07-12 US US13/547,518 patent/US8723323B2/en active Active
-
2014
- 2014-03-25 US US14/224,402 patent/US20140206153A1/en not_active Abandoned
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3898541A (en) * | 1973-12-17 | 1975-08-05 | Vitramon Inc | Capacitors and method of adjustment |
US4734818A (en) * | 1985-01-22 | 1988-03-29 | Rogers Corporation | Decoupling capacitor for surface mounted leadless chip carriers, surface mounted leaded chip carriers and Pin Grid Array packages |
US5132806A (en) * | 1989-06-19 | 1992-07-21 | Hitachi, Ltd. | Semiconductor integrated circuit device |
US5404265A (en) * | 1992-08-28 | 1995-04-04 | Fujitsu Limited | Interconnect capacitors |
US6145735A (en) * | 1998-09-10 | 2000-11-14 | Lockheed Martin Corporation | Thin film solder paste deposition method and tools |
US6320249B1 (en) * | 1999-11-30 | 2001-11-20 | Glotech, Inc. | Multiple line grids incorporating therein circuit elements |
US20020179573A1 (en) * | 2001-06-01 | 2002-12-05 | Gianchandani Yogesh B. | Micro-electro-discharge machining method and apparatus |
US7944028B2 (en) * | 2002-02-11 | 2011-05-17 | Don Saunders | TFCC (TM) and SWCC (TM) thermal flex contact carriers |
US6917113B2 (en) * | 2003-04-24 | 2005-07-12 | International Business Machines Corporatiion | Lead-free alloys for column/ball grid arrays, organic interposers and passive component assembly |
US20070034989A1 (en) * | 2004-07-15 | 2007-02-15 | Fujitsu Limited | Capacitive element, method of manufacture of the same, and semiconductor device |
US7348661B2 (en) * | 2004-09-24 | 2008-03-25 | Intel Corporation | Array capacitor apparatuses to filter input/output signal |
US7553696B2 (en) * | 2006-08-29 | 2009-06-30 | International Business Machines Corporation | Method for implementing component placement suspended within grid array packages for enhanced electrical performance |
US8395902B2 (en) * | 2008-05-21 | 2013-03-12 | International Business Machines Corporation | Modular chip stack and packaging technology with voltage segmentation, regulation, integrated decoupling capacitance and cooling structure and process |
Also Published As
Publication number | Publication date |
---|---|
US20140206153A1 (en) | 2014-07-24 |
US20140015098A1 (en) | 2014-01-16 |
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Owner name: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MCINTYRE, THOMAS J.;STURCKEN, KEITH K.;HAGERTY, CHRISTY A.;REEL/FRAME:028542/0878 Effective date: 20120703 |
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